Question

Linux ip-172-31-36-170 3.10.35-43.137.amzn1.x86_64＃1 SMP Wed Apr 2 09:36:59 UTC 2014 x86_64 x86_64 x86_64 GNU / Linux

Amazon Linux AMI发布2014.03 CPE：/ O：亚马逊：LINUX：2014.03：GA

我使用selenium.webdriver.PhantomJS的脚本遇到了一个奇怪的问题。

...症状我的脚本使用以下命令启动phantomjs会话

from selenium import selenium
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.common.action_chains import ActionChains
(…)
def load_driver(self, _driver = "phantomjs", _path = "./phantomjs"):
        if   "phantom" in str(_driver).lower():
            self.driver = webdriver.PhantomJS(_path)

失败： selenium.common.exceptions.WebDriverException：消息：＆＃39;无法使用ghostdriver启动phantomjs。＆＃39; ;屏幕截图：可通过屏幕获取

但是，在python命令行中，一切正常......

from selenium import webdriver
_path = './phantomjs.exe'
driver = webdriver.PhantomJS(_path)
PLATFORM: Linux
platform.system() != 'Windows':  True

（我将解释“PLATFORM：Linux”和“platform.system（）！=＆＃39; Windows＆＃39;：True”下面的内容）

... SO 我将错误追溯到“/usr/lib/python2.6/site-packages/selenium/webdriver/phantomjs/service.py”，特别是这段代码......

def start(self):
    """
    """
    try:
        print "PLATFORM:", platform.system() #ADDED BY ME
        # FOLLOWING ADDED BY ME, NOW CAUSING THE ERROR
        print "platform.system() != 'Windows': ", platform.system() != 'Windows' 
        self.process = subprocess.Popen(self.service_args, stdin=subprocess.PIPE,
                                        close_fds=platform.system() != 'Windows', # <-- THIS CAUSED ORIG PROB
                                        stdout=self._log, stderr=self._log)

    except Exception as e:
        raise WebDriverException("Unable to start phantomjs with ghostdriver.", e)

和这里的问题...... 当我在python命令行运行代码（见上文）时，一切都很好，对'platform.system（）'和“platform.system（）的响应！=＆＃39; Windows＆＃39; “ 是正确的。

然而，当我运行我的脚本时，'platform.system（）'报告为空白和“platform.system（）！=＆＃39; Windows＆＃39; “错误。（见下面的实际输出）。

因此，出于某种原因，当我的脚本加载selenium并运行时... SELENIUM CODE失去了'platform'导入。

感谢您的帮助！

下面的实际输出（通知＆＃39;平台：＆＃39;后面跟着＆＃39;空白＆＃39;（而不是＆＃39; Linux＆＃39;）和下一行“平台。 system（）！=＆＃39; Windows＆＃39;“触发错误。这些行被我添加到SELENIUM代码中，而不是我的代码！）

PLATFORM:
Traceback (most recent call last):
  File "./agmarknet.py", line 834, in <module>
    username  = options.username      # --username
  File "./agmarknet.py", line 124, in __init__
    self.load_driver(driver, driver_path)
  File "./agmarknet.py", line 521, in load_driver
    self.driver = webdriver.PhantomJS(_path)
  File "/usr/lib/python2.6/site-packages/selenium/webdriver/phantomjs/webdriver.py", line 50, in __init__
    self.service.start()
  File "/usr/lib/python2.6/site-packages/selenium/webdriver/phantomjs/service.py", line 64, in start
    print "PLATFORM:", platform.system() #333
  File "/usr/lib64/python2.6/platform.py", line 1272, in system
    return uname()[0]
  File "/usr/lib64/python2.6/platform.py", line 1239, in uname
    processor = _syscmd_uname('-p','')
  File "/usr/lib64/python2.6/platform.py", line 995, in _syscmd_uname
    output = string.strip(f.read())
  File "./agmarknet.py", line 350, in _signal_handler
    self._cleanup()
  File "./agmarknet.py", line 194, in _cleanup
    self.driver.close()
AttributeError: 'Agmarknet' object has no attribute 'driver'
2014-05-18 12:42:40,281 - Agmarknet - INFO - Closing WebDriver...
Error in atexit._run_exitfuncs:
Traceback (most recent call last):
  File "/usr/lib64/python2.6/atexit.py", line 24, in _run_exitfuncs
    func(*targs, **kargs)
  File "./agmarknet.py", line 194, in _cleanup
    self.driver.close()
AttributeError: 'Agmarknet' object has no attribute 'driver'
Error in sys.exitfunc:
Traceback (most recent call last):
  File "/usr/lib64/python2.6/atexit.py", line 24, in _run_exitfuncs
    func(*targs, **kargs)
  File "./agmarknet.py", line 194, in _cleanup
    self.driver.close()

由于我的脚本，'platform'导入从selenium中消失了

0 个答案: